Not too start an argument here. But I have to say I disagree. A bolt on part should be just that. I manage a Lumberyard / hardware store. When we sell a door it is ready to install. You don't need to adjust the hinges or trim the edge! (atleast not on a prehung door) If I was selling just a door slab that a person was going to retrofit into an old door frame...then that would be a different story. But I wouldn't advertise that as a "bolt on" type part. (like the heads are) If they are selling them as a "bolt on" then they should be ready to install. I can't even imagine selling someone a new steel entry door and then they had to move the hinges and "trim the edge". Just my